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  • 1990-1994  (14)
  • 1965-1969  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Semi-quantitative human papillomavirus DNA detection in the management of women with minor cytological abnormality (1994)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 101 (1994), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1994.tb11952.x
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  • 2
    Electronic Resource
    Electronic Resource
    The Relative Contributions of Sugars from Assimilating Leaves and Stem Storage Cells to the Sieve Tube Sap in Willow Cuttings (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 22 (1969), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: A method is described for the measurement of the relative contributions of sugars from the assimilating leaves and stem storage cells to the sieve tube sap in leafy cuttings of Salix viminalis L. In these experiments sieve tube sap was collected as honeydew from a small colony of aphids, Tuberolachnus salignus (Gmelin).Using this method it has been shown that in cuttings maintained under continuous illumination prior to experimentation, the leaves contribute about 75 per cent of the total sugars in the sieve tube sap. With cuttings which have been stored by keeping them in darkness, the level of labile carbohydrates in the stem storage cells decreases, in comparison with those growing in light, and the percentage of sugars in the sieve tube sap supplied by the leaves rises to 90 per cent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1969.tb07389.x
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  • 3
    Electronic Resource
    Electronic Resource
    Infrared absorption spectrum of neutral magnesium donors in silicon (1992)
    Springer
    International journal of infrared and millimeter waves 13 (1992), S. 769-775 
    Details
    ISSN: 1572-9559
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The infrared absorption spectrum of neutral magnesium donor impurities in silicon has been investigated under the high resolution of a Fourier-transform infrared spectrometer. The absorption spectrum measured at liquid helium temperature are observed to be clearly better than those reported earlier in the literature. Several new lines corresponding to excitation from ground state to higher excited states have been observed and identified.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01010698
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  • 4
    Electronic Resource
    Electronic Resource
    Erratum infrared absorption spectrum of singly ionized magnetism donors in silicon (1993)
    Springer
    International journal of infrared and millimeter waves 14 (1993), S. 1865-1865 
    Details
    ISSN: 1572-9559
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02101338
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  • 5
    Electronic Resource
    Electronic Resource
    Infrared absorption spectrum of singly ionized magnesium donors in silicon (1993)
    Springer
    International journal of infrared and millimeter waves 14 (1993), S. 1099-1106 
    Details
    ISSN: 1572-9559
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The infrared absorption spectrum of singly ionized magnesium donor impurities in silicon has been measured. Due to better sample preparation and higher resolution of the instrument, the absorption spectrum obtained is much better than previous reports. Some new lines have been observed and identified. Besides the 2p± line, the 3p± line has also been observed for the first time to be a doublet indicating that the excited state np± splits into two states due to chemical splitting.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02084585
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    The influence of various physical parameters on anther culture of broccoli (Brassica oleracea var. italica) (1990)
    Springer
    Plant cell, tissue and organ culture 20 (1990), S. 147-155 
    Details
    ISSN: 1573-5044
    Keywords: (Brassica oleracea L. var. italica) ; embryos ; anther density
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Embryo formation by cultured broccoli (Brassica oleracea L. var. italica) anthers was best in the pH range of 5.5 to 5.8. Manipulation of the initial medium pH showed, however, that embryos could be recovered throughout the entire pH range tested. Experiments designed to test the influence of anther density on embryo production exhibited an apparent population effect. Comparison of anthers cultured with and without filaments showed a significantly lower level of embryo formation with filaments attached. The importance of anther orientation with the adaxial surface up was also demonstrated. Detailed studies of the effect of temperature on anther response showed the importance of 35°C treatments. Other temperatures and a variety of temperature manipulations were either comparatively ineffective or inhibitory. The duration of 35°C exposure required for optimal response varied widely between 18 and 48 h. Wide variation in plant to plant response was observed despite attempts to optimize the manipulation of physical parameters. Individual plants were identified that reliably formed many thousands of embryos, whereas other plants failed to form embryos under all tested conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00041875
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  • 7
    Electronic Resource
    Electronic Resource
    Effects of environment on the uptake and distribution of calcium in tomato and on the incidence of blossom-end rot (1993)
    Springer
    Plant and soil 154 (1993), S. 127-132 
    Details
    ISSN: 1573-5036
    Keywords: blossom-end rot ; calcium ; greenhouse environment ; humidity ; root-temperature ; salinity ; tomato ; transpiration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Studies of Ca uptake and distribution in relation to environmental variables were used to relate Ca status of tomato fruit to blossom-end rot (BER) incidence. Ca uptake was highly correlated with solar radiation and root temperature. The rate of Ca uptake decreased linearly with increasing salinity. High humidity reduced Ca import by the leaves but increased that by the fruit. While total plant dry weight was reduced more than fruit dry weight by salinity, total Ca uptake and the Ca content of the fruit were decreased similarly. Thus, the concentration of calcium in the fruit was substantially reduced by salinity. The distal half of the fruit contained less Ca than the proximal half. The lowest % Ca was found in the distal placenta and locular tissues, where BER first develops. The incidence of BER was often stimulated more by high salinity achieved with the addition of major nutrients than with NaCl. The cause of BER is usually an interaction between the effects of irradiance and ambient temperature on fruit growth and the effects of environmental stress on calcium uptake and distribution within the whole plant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00011081
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  • 8
    Electronic Resource
    Electronic Resource
    Detection of DNA and E7 transcripts of human papillomavirus types 16, 18, 31 and 33, TGFβ and GM-CSF transcripts in cervical cancers and precancers (1994)
    Springer
    Archives of virology 139 (1994), S. 79-85 
    Details
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The association of human papillomavirus (HPV) with a high proportion of cervical cancers should allow the efficiency of cytological screening methods to be improved. We report here that quantitative detection of HPV types 16, 18, 31 and 33 DNA and the corresponding E7 transcripts by polymerase chain reaction (PCR) may be of value in identifying precancers and cancers. In clinical specimens with major cervical lesions, the level of E7 transcription does not appear to be related to concomitant transcription of either transformation growth factor-beta (TGFβ) or granulocyte-macrophage colony stimulating factor (GM-CSF) genes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01309455
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  • 9
    Electronic Resource
    Electronic Resource
    In vitro encystment and experimental infections ofBlastocystis hominis (1993)
    Springer
    Parasitology research 79 (1993), S. 456-460 
    Details
    ISSN: 1432-1955
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Cultures ofBlastocystis hominis were induced to encyst using three encystation media: (a) an encystation medium (EM) comprising yeast extract in buffered saline containing 50% horse serum, (b) an encystation medium (CEM) comprising EM conditioned with bacterial soluble products and (c) an encystation medium (TEM) containing 0.5% trypticase in EM. Two isolates ofB. hominis were studied, an axenized isolate C and a non-axenized isolate MS. In EM, isolate C did not encyst, whereas 6.1% of isolate MS had encysted by day 1. However, in CEM and TEM, 17.4% and 25.7% of isolate C, respectively, had encysted by day 5. In all three media, isolate MS encysted more readily than isolate C, with as much as 91.7% of the former encysting in TEM. As viewed by phase-contrast microscopy, cyst-like stages appeared highly refractile. Direct stool examination of juvenile Wistar rats infected with 10000 cyst-like stages of both C and MS isolates showedBlastocystis at day 2 post-infection. At autopsy on day 7, large numbers ofBlastocystis were seen in the cecum, with smaller numbers being observed in the large intestine. In contrast, rats fed with various inocula of the vacuolar stages of isolates C and MS did not become infected, indicating the importance of the encysted stages in the transmission of the parasite.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00931582
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  • 10
    Electronic Resource
    Electronic Resource
    Axenic culture ofBlastocystis hominis in Iscove's modified Dulbecco's medium (1993)
    Springer
    Parasitology research 79 (1993), S. 614-616 
    Details
    ISSN: 1432-1955
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00932249
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